On expected volumes of multidimensional confidence sets associated with the usual and adjusted likelihoods

Gauri S. Datta and Thomas J. DiCiccio

Journal of the Royal Statistical Society Series B, 2001, vol. 63, issue 4, 691-703

Abstract: We consider a general multiparameter set‐up, where both the interest and the nuisance parameters are possibly vector valued. We derive an explicit higher order asymptotic formula to compare the expected volumes of confidence sets given by likelihood ratio statistics arising from the usual profile likelihood and various adjustments thereof. Our general framework also allows us to include highest posterior density regions, with approximate frequentist validity, in the study. The fact that our interest parameter is possibly vector valued complicates the derivation and warrants the development of special tools and techniques.

Date: 2001
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